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3 instalments of £12.56 with clearpay Learn more
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6 weekly payments from £6.28 with laybuy Learn more
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6 instalments of £6.28 with splitit Learn more
Strengthen and protect strands with the Kérastase Resistance Serum Extentioniste, a nourishing leave-in hair serum that helps to protect against breakage. The non-greasy formula uses a host of powerful ceramides to seal the hair cuticle whilst a blend of lipids creates a smooth surface, creating a fortifying effect from the inside out.
The highly concentrated serum forms a defensive barrier over the scalp to protect against damaging environmental aggressors, whilst also sweeping away impurities for a fresh appearance. Hair will be boosted, revitalised and given improved resistance.
Aqua / Water, Polyquaternium-37, Paraffinum Liquidum / Mineral Oil, Amodimethicone, Polysorbate 20, Quaternium-87, Stearyl Alcohol, Menthoxypropanediol, Behentrimonium Chloride, Safflower Glucoside, Maltodextrin, Propylene Glycol, Candelilla Cera / Candelilla Wax, Ppg-1 Trideceth-6, Propanediol, Chlorhexidine Digluconate, Isopropyl Alcohol, Trideceth-6, Acrylates Copolymer, Sorbitan Oleate, Polyquaternium-11, Rose Extract, 2-Oleamido-1,3-Octadecanediol, Cetrimonium Chloride, Camellia Sinensis Leaf Extract, Xanthan Gum, Tocopherol, Bht, Sodium Citrate, Parfum / Fragrance.
- EXTENTIONISTE
Aqua / Water, Polyquaternium-37, Paraffinum Liquidum / Mineral Oil, Amodimethicone, Polysorbate 20, Quaternium-87, Stearyl Alcohol, Menthoxypropanediol, Behentrimonium Chloride, Safflower Glucoside, Maltodextrin, Propylene Glycol, Candelilla Cera / Candelilla Wax, Ppg-1 Trideceth-6, Propanediol, Chlorhexidine Digluconate, Isopropyl Alcohol, Trideceth-6, Acrylates Copolymer, Sorbitan Oleate, Polyquaternium-11, Rose Extract, 2-Oleamido-1,3-Octadecanediol, Cetrimonium Chloride, Camellia Sinensis Leaf Extract, Xanthan Gum, Tocopherol, Bht, Sodium Citrate, Parfum / Fragrance.
- Kerastase
- 50ml
No rinse. Apply to wet or dry hair and scalp and massage scalp. In case of contact with eyes, rinse them immediately and thoroughly.

Kérastase Resistance Serum Extentioniste 50ml
£37.70
In stock
-
3 instalments of £12.56 with clearpay Learn more
-
6 weekly payments from £6.28 with laybuy Learn more
-
6 instalments of £6.28 with splitit Learn more
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Strengthen and protect strands with the Kérastase Resistance Serum Extentioniste, a nourishing leave-in hair serum that helps to protect against breakage. The non-greasy formula uses a host of powerful ceramides to seal the hair cuticle whilst a blend of lipids creates a smooth surface, creating a fortifying effect from the inside out.
The highly concentrated serum forms a defensive barrier over the scalp to protect against damaging environmental aggressors, whilst also sweeping away impurities for a fresh appearance. Hair will be boosted, revitalised and given improved resistance.
Aqua / Water, Polyquaternium-37, Paraffinum Liquidum / Mineral Oil, Amodimethicone, Polysorbate 20, Quaternium-87, Stearyl Alcohol, Menthoxypropanediol, Behentrimonium Chloride, Safflower Glucoside, Maltodextrin, Propylene Glycol, Candelilla Cera / Candelilla Wax, Ppg-1 Trideceth-6, Propanediol, Chlorhexidine Digluconate, Isopropyl Alcohol, Trideceth-6, Acrylates Copolymer, Sorbitan Oleate, Polyquaternium-11, Rose Extract, 2-Oleamido-1,3-Octadecanediol, Cetrimonium Chloride, Camellia Sinensis Leaf Extract, Xanthan Gum, Tocopherol, Bht, Sodium Citrate, Parfum / Fragrance.
- EXTENTIONISTE
Aqua / Water, Polyquaternium-37, Paraffinum Liquidum / Mineral Oil, Amodimethicone, Polysorbate 20, Quaternium-87, Stearyl Alcohol, Menthoxypropanediol, Behentrimonium Chloride, Safflower Glucoside, Maltodextrin, Propylene Glycol, Candelilla Cera / Candelilla Wax, Ppg-1 Trideceth-6, Propanediol, Chlorhexidine Digluconate, Isopropyl Alcohol, Trideceth-6, Acrylates Copolymer, Sorbitan Oleate, Polyquaternium-11, Rose Extract, 2-Oleamido-1,3-Octadecanediol, Cetrimonium Chloride, Camellia Sinensis Leaf Extract, Xanthan Gum, Tocopherol, Bht, Sodium Citrate, Parfum / Fragrance.
- Kerastase
- 50ml
No rinse. Apply to wet or dry hair and scalp and massage scalp. In case of contact with eyes, rinse them immediately and thoroughly.
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